Method prepOutput

io/LasWriter.cpp:348–389

void LasWriter::prepOutput(std::ostream *outStream, const SpatialReference& srs)
{
    // Use stage SRS if provided.
    m_srs = getSpatialReference().empty() ? srs : getSpatialReference();

    handleHeaderForwards(m_forwardMetadata);

    // Filling the header here gives the VLR functions below easy access to
    // the version information and so on.
    fillHeader();

    // Spatial reference can potentially change for multiple output files.
    addSpatialRefVlrs();

    d->summary.clear();
    m_ostream = outStream;
    if (d->header.dataCompressed())
        readyCompression();

    // Compression should cause the last of the VLRs to get filled.  We now
    // have a valid count, so fill the header again.
    fillHeader();

    validateHeader();

    // Write the header.
    std::vector<char> headerBuf = d->header.data();
    m_ostream->write(headerBuf.data(), headerBuf.size());
    d->header.vlrOffset = (uint32_t)m_ostream->tellp();

    for (const las::Vlr& vlr : m_vlrs)
    {
        std::vector<char> buf = vlr.headerData();
        m_ostream->write(buf.data(), buf.size());
        m_ostream->write(vlr.data(), vlr.dataSize());
    }
    d->header.pointOffset = (uint32_t)m_ostream->tellp();

    // Set the point buffer size here in case we're using the streaming
    // interface.
    m_pointBuf.resize(d->header.pointSize);
}


/// Search for metadata associated with the provided recordId and userId.